Mark,

I have an 84 Westy, with working AC, and a 2.1L also.  I put in the "lower temp switch", to help make sure my van runs cool when in traffic, so it turns on earlier.  I haven't had an issue "yet"!?!?

Why is the lower temps switch "wrong"?  Should I put in the regular switch?

Thanks!

Jack

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of vw_van_fan_Mark
Sent: Monday, August 23, 2021 11:38 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Replacing radiator Fan Thermo switch questions

The new switch you have is the standard replacement temp range.

The "wrong" switch turns on the fan at lower temps than that.

The early watercooled vans used one that turned on at higher temps than
your new one.

Bentley page 19.12 shows the original factory temp switch ranges for
waterboxers.

After you replace it, look closely at your old one to see what temp
markings are on it.

Mark

Tom Buese wrote:
> My thermo switch is bad & I have a new spare that is rated 85-93 degrees C. I read an old post from Mark Drillock talking about the several different switches that were available 12 years ago & a problem w/ using one that operates at a lower temp thus causing the #7 fuse  to overheat & melt the plastic around the fuse holder!  I dont want to install my new switch if that is the wrong one!
> Do I have the best switch or did I get the wrong one? Inquiring mind needs to know before another 500 mile RT on Friday! TIA!
>
> Sent from my iPhone
>
>
> Sent from my iPhone
>